8608466148
This already works, but somewhat by accident (due to the order of emission in clang, the location is set to the loop header (during the emission of the iteratior increment) before the loop backedge is emitted), so let's just add a test for symmetry and future-proofing. llvm-svn: 216298
56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
// RUN: %clang_cc1 -g -std=c++11 -S -emit-llvm %s -o - | FileCheck %s
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// PR19864
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extern int v[2];
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int a = 0, b = 0;
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int main() {
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#line 100
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for (int x : v)
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if (x)
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++b; // CHECK: add nsw{{.*}}, 1
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else
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++a; // CHECK: add nsw{{.*}}, 1
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// The continuation block if the if statement should not share the
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// location of the ++a statement. The branch back to the start of the loop
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// should be attributed to the loop header line.
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// CHECK: br label
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// CHECK: br label
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// CHECK: br label {{.*}}, !dbg [[DBG1:!.*]]
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#line 200
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while (a)
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if (b)
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++b; // CHECK: add nsw{{.*}}, 1
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else
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++a; // CHECK: add nsw{{.*}}, 1
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// CHECK: br label
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// CHECK: br label {{.*}}, !dbg [[DBG2:!.*]]
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#line 300
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for (; a; )
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if (b)
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++b; // CHECK: add nsw{{.*}}, 1
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else
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++a; // CHECK: add nsw{{.*}}, 1
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// CHECK: br label
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// CHECK: br label {{.*}}, !dbg [[DBG3:!.*]]
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#line 400
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int x[] = {1, 2};
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for (int y : x)
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if (b)
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++b; // CHECK: add nsw{{.*}}, 1
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else
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++a; // CHECK: add nsw{{.*}}, 1
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// CHECK: br label
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// CHECK: br label {{.*}}, !dbg [[DBG4:!.*]]
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// CHECK: [[DBG1]] = metadata !{i32 100, i32 0, metadata !{{.*}}, null}
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// CHECK: [[DBG2]] = metadata !{i32 200, i32 0, metadata !{{.*}}, null}
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// CHECK: [[DBG3]] = metadata !{i32 300, i32 0, metadata !{{.*}}, null}
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// CHECK: [[DBG4]] = metadata !{i32 401, i32 0, metadata !{{.*}}, null}
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}
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